RF-45 Downfeed Lock Knob
#1
I felt like doing a small project last night so I decided to make a better knob for my RF-45 Style Mill down-feed lock. This knob when tightened allows the fine feed to operate and when loose allows the drill press style handle to operate. The original knob is made of cheap plastic. Here's a photo:
   

I didn't think to take pictures during the lathe work. I turned the knob from a 1.6" long 3" round piece of 6061 aluminum. After I finished turning and boring the blank, I milled the cutouts around the rim.
   
Here's a closeup. I made each cutout with a boring bar set to cut a 7/8" radius. The rotary table is turned 60 degrees for each cutout
   
Here's the finished knob. I used my new Shop Press to press fit a 10mm x 45 mm cap head screw.
   
My new knob has a nicer feel and also looks better.
   
henryarnold, proud to be a member of MetalworkingFun Forum since Apr 2012.
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#2
Henry,

Nice job on the new knob. You've just added another project to my list. That looks like a fun project though. Smile

Ed
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#3
Henry,

That looks a lot betterThumbsupThumbsup
John
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#4
Henry,

Very nice, in fact I think that is rather splendid Smiley-signs107 Worthy
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DaveH
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#5
(06-02-2012, 02:18 PM)DaveH Wrote: Henry,

Very nice, in fact I think that is rather splendid Smiley-signs107 Worthy
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DaveH
well dun
krv3000, proud to be a member of MetalworkingFun Forum since Feb 2012.
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#6
Henry,

Love your knob!!!Drool

RotflRotflRotflRotflRotflRotflRotfl

Nicely done!!Smiley-signs107Big Grin


Jerry.Popcorn
ETC57, proud to be a member of MetalworkingFun Forum since Feb 2012.
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#7
Nice, I never thought of using the boring head to make the grips
Free advice is worth exactly what you payed for it.
Greg
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#8
(06-02-2012, 08:23 PM)f350ca Wrote: Nice, I never thought of using the boring head to make the grips

I thought that was rather clever of Henry. I learned something new from his post. Thumbsup

Ed
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#9
(06-02-2012, 12:16 PM)henryarnold Wrote: Here's a closeup. I made each cutout with a boring bar set to cut a 7/8" radius.

Henry,

7/8" radius? On a 3" diameter knob? 17428

Maybe just my eyes playing tricks on me, but they don't look to be that big to me.

Smiley-signs137
Willie
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#10
(06-02-2012, 09:26 PM)Highpower Wrote: Henry,

7/8" radius? On a 3" diameter knob? 17428

Maybe just my eyes playing tricks on me, but they don't look to be that big to me.

Smiley-signs137
A 3" diameter knob has a circumference of almost 10" and those 7/8"
radius sectors (not full diameter) are probably around 3/4" across so I'd say, Ya your eyes must be playing tricks on you.
(or mine areChin)
Or maybe Henry meant 7/8" Diameter?
Oh, never mindBlush
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
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